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KMID : 0903619940350060587
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Journal of the Korean Society for Horticultural Science
1994 Volume.35 No. 6 p.587 ~ p.592
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Physiological and Morphological Responses of Perilla and Cucumber to simulated Acid Rain
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정갑채/Chung, Gap Chae
김윤수/이성희/Kim, Yoon Soo/Lee, Sung Hee
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Abstract
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Physiological and morphological alterations caused by simulated acid rain (SAR) were determined in cucumber (Cucumis sativus L.) and petilla (Perilla frutescens var. japon-ica HARA). SAR of pH 2.5 was sprayed onto plants for 10 days at the rate of 10 ㎜/h/day. Perilla was very sensitive to the SAR in terms of plant growth, whereas cucumber was resistant. SAR-treated perilla leaves increased in peroxidase activity, while those of cucumber showed little changes in the activities. Less chlorophyll content and increased ethylene evolution were noted in perilla than in cucumber. Photosynthetic activity per unit leaf area, however, was not affected by SAR. A rapid increase in the wettability of the perilla leaves in 1-2 days of SAR application was marked. Severe degradation of the epidermal layer and depletion of cytoplasm in the palisade cells of the perilla plants were observed.
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